Shaping-machine



(No Model.)

U. EBERHARDT.

SHAPING MACHINE 1 5 pl f llllllHIlllHl \II lllllllllllfllllliil b m Q Patented IINFMNIIIIIIIHHIII jiziesgf I mfni'v 7.

UNITED STATES PATENT ()FFICE.

ULRIOH'EBERHARDT, OF NEWARK, NEWV JERSEY.

SHAPING-MACHINE.

srncrrrcnrron forming part of Letters :Patent No. 402,574, dated May 7, 1889.

' Application filed December 8, 1888. Serial No. 292,991. (No model.)

' To all whom it may concern.-

Be it known that I, ULRICH EBER'HARDT, a citizen of the United States, residing at Newark, Essex county, New Jersey, have invented certain new and. useful Improvem cuts in Crank-Planer Levers, fully described and represented in .the following specification and the accompanying drawings, forming a part of the same.

This invention relates to an improved lever-connection between the crank and the ram of a crank-planer or shaping-machine; and it consists, partly,'in a crank-lever hav-' ing a slot in one side only for the reception of the crank-pin box, and formed with a web upon the opposite side to strengthen the arm,

with an aperture through such web to giy e In the annexed drawings the lever, which embodies all the improvements, is shown in connection with the crank-pin and the ram, as the latter are the only parts of the sh apingmachine that co-operate therewith.

der j'side of the ram.

Figure l is a side elevation of the crankpin and its driving-gear, the ram, and their connecting-lever. Fig. 2 is'a view of the un- Fig. 3 is an edge View of the lever; and Fig. 4 is a vertical section of the lever, the ram, and the frame of the shaping-machine, taken on line so 00 in Fig. 1, with the gearing for the crank-pin (not shown) in section.

The crank-pin a is shown attached to a seg ment, b, pivoted upon the face of a gear-wheel, c, and movable thereon by suitable meanssuch as are described in United States Patent No. 241,488, issued May 17, 1881by which the crank-pin may be moved to and from the center of the crankshaft d to vary the stroke of the ram.

In Fig. 4 the frame of the shaping-machine is shown in section, consisting of two plates,

F F, supporting ways to for the ram; but it is obviously immaterial to the present invention how the frame be constructed. The gear 0 is shown journaled in a bearing, 0, upon the plate F, and rotated by a gear, 0 upon a shaft, 0

ris the ram,-provided with'slot r, in which is fitted a bolt, 3, carrying a forked piece having two ears, i.

f is the lever, movable with one .flat side adjacent to the crank-pin a, and oscillated by the motion of such pin upon a pivot, g, at its lower end. The lever is formed in the side adjacent to the crank-pin with. a slot, h, in which the crank-pin boX a slides, and upon the opposite side with a web, 2 having an aperture, j, to give access to the crank-pin.

The plate F of the shaping-machine adjacent to the plate 4.' is also formed with an opening, F to give access to the aperture j in the lever.

e is the head of the lever, rounded at its opposite faces to fit and move between the'lugs t, and connected with the lever by a neck, 6. Such neck permits the turning of the head between the lugs when the crank imparts a long stroke to the ram 5 but it unavoidably weakens the junction of the head and lever; and the present improvement consists, partly, in projecting flanges from the opposite edges of the neck, at such distance apart as to admit the lugs t between them. Such flanges thus strengthen the union of the head and lever, and offer no interference to the free oscillation of the head between the lugs. Heretofore it has been common to extend the slot h entirely through the lever, which divided the lever into two longitudinal parts, which were wholly separated, and thereby materially weakened. By forming the slot in only one side of the lever and closing the opposite side with the plate i, provided with the aperture j, the lever is strengthened much more than it is increased in weight, and is rendered much more rigid when in operation without materially increasing its cost or the labor of finishing .the slot. The aperture j affords the necessary access to the crank-pin for lubrication or examination, while the opening F in the plate or frame F of the shaping-machine affords convenient access to the aperture j. The plate F, which represents one side of the shaping-machine frame, is indicated'in Fig. 1; but the plate F, through which the aperture F would be formed, is removed in Fig. 1 to expose the ram and the other parts connected with the invention.

It is obvious that Where the box slides in the slot, at the same time that it presses against the side of the slot the whole pressure transmitted from the crank-pin is received by the metal at one side of the slot only,-and that only one-half of the metal in the lever is directly employed in transmitting the move ment to the'same if theslot be extended all the way through the lever and the opposite sides of the slot be disconnected. The object of the Web iis therefore to connect the metal bars of the lever f, which form the opposite sides of the slot,and thus enable 'each bar to assist theotherin bearing'the strain imposed upon it. As the crank-pin rotates througha; Whole revolution in such constructions, 'the' pressure operates alternately upon theopposit-esides of the slot, and when the slot ex 'tends all the way through the lever it has been common for such pressure :to break or crack'the metal at one side of the slot for sectorgb, pivoted near theedge'of the gear c, and held in-any desired position on the face the ram 0", the'crank-pin a, and the crank for of the gear by a segmental gib. The adjust- 4o ment of the sector I) is intended to shift the crank-pin a to or from the shaft (1 to vary the throw of the lever f; but the construction of the crank is immaterial to the present invention, although the slot h in the crank-lever f would in every case be formed upon the side adjacent to the crank, whatever the construction of the latter might be.

What is claimed herein is- 1. In a crank-planer, the combination, with the ram r, the crank-pin a, and the crank for driving the pm, of the crank-lever f, formed with the slot h in one side adjacent to the crank, the crank-pin box fitted movably thereto, the Web i, connecting the bars upon the opposite sides'of the slot, and the aperture j through such Web, the whole-arranged and operated-as and-for thepurposesetforth.

2. In a crank-planer,'the combination,with

'60 driving the pin,-of the crank-lever f, formed with the slot h inone side adjacent to the crank and having the crank-pin box fitted movably thereto, the web 1', connecting the bars upon the opposite sides of the slot,'the rounded head e, connected with the lever by the neck 6', the flanges 'Z, projected at'opposite sides of the neek,and the lugs t, conneetedwith the ram and fitted to the opposite sides of the head, as+and for the purpose set forth.

, In testimony whereof -I have hereunto set my hand in the presence of two'suhseribing witnesses.

ULRICH EBERHARDT.

Witnesses: I

Tnos. S CRANE, HENRY J. MILLER. 

